Sony MZ-E800 service manual SSB Data, Ssb Clk, Flash WR EN, DBB0, DBB1, Xavls, Xcs Nv

Pin No.	Pin Name	I/O	Description
97	TMS	I	Test mode control signal input terminal for JTAG scan test Not used (open)
98	TCX	I	Clock signal input terminal for JTAG scan test	Not used (open)
99	XTRST	I	Reset signal input terminal for JTAG scan test	Not used (fixed at “L”)
100	TDO	O	Data output terminal for JTAG scan test Not used (open)
101	NC	O	Not used (open)
102	SSB DATA	I/O	Two-way SSB serial data bus with the SN761056CDBT (IC501)
103	SSB CLK	O	SSB serial clock signal output to the SN761056CDBT (IC501)
104	FLASH WR EN	I	Write enable signal input terminal Not used (fixed at “H”)
105	VDD	—	Power supply terminal (+2.4V)
106	VSS	—	Ground terminal
107 to 109	VLC1 to VCL3	I	Not used (fixed at “H”)
110 to 115	SEG0 to SEG5	O	Segment drive signal output to the liquid display module (LCD901)
116	DBB0	I	Set switch (S806) input terminal (A/D input) (DIGITAL SOUND PRESET switch 1 input)
117	DBB1	I	Set switch (S806) input terminal (A/D input) (DIGITAL SOUND PRESET switch 2 input)
118	XAVLS	I	Set switch (S807) input terminal (A/D input)	(AVLS switch input) “L”: limit
119	XCS NV	O	Chip select signal output to the EEPROM (IC802)
120	NC	O	Not used (open)

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